using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class EvenNumberListGeneratorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1: n = 10
        string result1 = EvenNumberListGenerator.EvenNumbersSequence(10);
        if (result1 != "2,4,6,8,10") {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2: n = 1
        string result2 = EvenNumberListGenerator.EvenNumbersSequence(1);
        if (result2 != "") {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3: n = 11
        string result3 = EvenNumberListGenerator.EvenNumbersSequence(11);
        if (result3 != "2,4,6,8,10") {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4: n = 0
        string result4 = EvenNumberListGenerator.EvenNumbersSequence(0);
        if (result4 != "") {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5: n = 2
        string result5 = EvenNumberListGenerator.EvenNumbersSequence(2);
        if (result5 != "2") {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        } else {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class EvenNumberListGenerator {
    public static string EvenNumbersSequence(int n) {
        if (n < 2) return "";
        return String.Join(",", Enumerable.Range(1, n/2).Select(x => x * 2));
    }
    public static void TestEvenNumbersSequence() {
        Debug.Assert(EvenNumbersSequence(10) == "2,4,6,8,10");
        Debug.Assert(EvenNumbersSequence(1) == "");
        Debug.Assert(EvenNumbersSequence(11) == "2,4,6,8,10");
        Debug.Assert(EvenNumbersSequence(0) == "");
        Console.WriteLine("All tests passed successfully.");
    }

}

你能写一个C#程序生成一个以逗号分隔的偶数列表，从2开始到指定的数(包括指定的数)为止吗？如果指定的数小于2，程序应返回一个空字符串。例如，如果输入是10，输出应为"2,4,6,8,10"。请确保包括必要的导入，并创建一个函数用几个例子来测试你的解决方案的正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class EvenNumberListGenerator
{
    public static string EvenNumbersSequence(int n) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class BookFilterTest {
    public static int Main(string[] args) {
        List<string> testTitles1 = new List<string> { "The Great Gatsby", "War and Peace", "The Grapes of Wrath" };
        List<string> expected1 = new List<string> { "The Great Gatsby" };
        if (!BookFilter.FilterTitlesWithKeyword(testTitles1, "Great").SequenceEqual(expected1)) {
            Console.WriteLine("Test 1 failed.");
            return -1;
        }

        List<string> testTitles2 = new List<string> { "Brave New World", "New Moon", "Something New" };
        List<string> expected2 = new List<string> { "Brave New World", "New Moon", "Something New" };
        if (!BookFilter.FilterTitlesWithKeyword(testTitles2, "New").SequenceEqual(expected2)) {
            Console.WriteLine("Test 2 failed.");
            return -1;
        }

        List<string> testTitles3 = new List<string> { "Harry Potter", "The Lord of the Rings", "The Hobbit" };
        List<string> expected3 = new List<string> { "The Hobbit" };
        if (!BookFilter.FilterTitlesWithKeyword(testTitles3, "Hobbit").SequenceEqual(expected3)) {
            Console.WriteLine("Test 3 failed.");
            return -1;
        }

        List<string> testTitles4 = new List<string> { "To Kill a Mockingbird", "Pride and Prejudice", "Moby Dick" };
        List<string> expected4 = new List<string> { "Pride and Prejudice" };
        if (!BookFilter.FilterTitlesWithKeyword(testTitles4, "and").SequenceEqual(expected4)) {
            Console.WriteLine("Test 4 failed.");
            return -1;
        }

        List<string> testTitles5 = new List<string> { "1984", "Animal Farm", "Brave New World" };
        List<string> expected5 = new List<string> { };
        if (!BookFilter.FilterTitlesWithKeyword(testTitles5, "None").SequenceEqual(expected5)) {
            Console.WriteLine("Test 5 failed.");
            return -1;
        }

        Console.WriteLine("All tests passed successfully.");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class BookFilter {
    public static List<string> FilterTitlesWithKeyword(List<string> titles, string keyword) {
        return titles.Where(title => title.Contains(keyword)).ToList();
    }
    public static void Check() {
        var testTitles1 = new List<string> { "The Great Gatsby", "War and Peace", "The Grapes of Wrath" };
        var expected1 = new List<string> { "The Great Gatsby" };
        Debug.Assert(FilterTitlesWithKeyword(testTitles1, "Great").SequenceEqual(expected1));
        var testTitles2 = new List<string> { "Brave New World", "New Moon", "Something New" };
        var expected2 = new List<string> { "Brave New World", "New Moon", "Something New" };
        Debug.Assert(FilterTitlesWithKeyword(testTitles2, "New").SequenceEqual(expected2));
        Console.WriteLine("All tests passed successfully.");
    }

}

想象一下你在一个项目中，需要根据书名是否包含特定关键词来组织书名集合。你的任务是编写一个C#方法，该方法可以筛选一本书名列表，并仅选择那些包含特定关键词的书名。这个方法应该足够通用，可以处理任何字符串列表和任何关键词。你将如何设计一个C#方法来过滤字符串列表，只返回包含指定关键词的那些字符串？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class BookFilter
{
    public static List<string> FilterTitlesWithKeyword(List<string> titles, string keyword) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

public class UniqueWordExtractorTest
{
    public static int Main()
    {
        var testCases = new List<Tuple<string, List<string>>>
        {
            new Tuple<string, List<string>>("Hello, world; hello universe", new List<string> { "Hello", "world", "hello", "universe" }),
            new Tuple<string, List<string>>("test, test; test; test", new List<string> { "test" }),
            new Tuple<string, List<string>>("one, two; three four; five", new List<string> { "one", "two", "three", "four", "five" }),
            new Tuple<string, List<string>>("a; a, a a", new List<string> { "a" }),
            new Tuple<string, List<string>>("", new List<string> { })
        };

        int failedTests = 0;

        foreach (var testCase in testCases)
        {
            var result = UniqueWordExtractor.ExtractUniqueWords(testCase.Item1);
            if (new HashSet<string>(result).SetEquals(testCase.Item2))
            {
                Console.WriteLine($"Test Passed: {testCase.Item1}");
            }
            else
            {
                Console.WriteLine($"Test Failed: {testCase.Item1}");
                failedTests++;
            }
        }

        return failedTests == 0 ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
public class UniqueWordExtractor
{
    Takes a string containing words separated by spaces, commas, or semicolons,
    and returns a collection of unique words.
    Example:
    - Given the string "Hello, world; hello universe", it should return a collection
    containing "Hello", "world", "hello", and "universe".
    public static List<string> ExtractUniqueWords(string paragraph)
    {
        char[] delimiters = new char[] { ' ', ',', ';' };
        var words = paragraph.Split(delimiters, StringSplitOptions.RemoveEmptyEntries);
        return words.Distinct().ToList();
    }
}
class Program
{

        CheckFunction();
    }
    static void CheckFunction()
    {
        var testString = "Hello, world; hello universe";
        var expected = new List<string> { "Hello", "world", "hello", "universe" };
        var result = UniqueWordExtractor.ExtractUniqueWords(testString);
        if (new HashSet<string>(result).SetEquals(expected))
        {
            Console.WriteLine("Test Passed!");
        }
        else
        {
            Console.WriteLine("Test Failed.");
        }
    }
}

想象一下，你正在开发一个文本处理应用程序，需要从给定的段落中提取所有唯一的单词。段落中的单词可以由空格、逗号或甚至分号隔开。你的挑战是编写一个方法，这个方法将段落作为输入并返回一个唯一单词的集合，确保不出现重复的单词，无论它们在输入字符串中是如何分隔的。

例如，如果输入是 "Hello, world; hello universe"，那么你的方法应该返回一个包含 "Hello", "world", "hello", 和 "universe" 的集合。

你能用 C# 编写一个高效完成此任务的代码吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class UniqueWordExtractor
{
public class UniqueWordExtractor
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Linq;

#<INSERT>

class TextTransformerTest
{
    public static int Main()
    {
        bool allTestsPassed = true;

        // Test case 1
        allTestsPassed &= Test("1234", "4321");
        // Test case 2
        allTestsPassed &= Test("abCD", "ABcd");
        // Test case 3
        allTestsPassed &= Test("#a@C", "#A@c");
        // Test case 4
        allTestsPassed &= Test("HelloWorld", "hELLOwORLD");
        // Test case 5
        allTestsPassed &= Test("1234!@#$", "$#@!4321");

        return allTestsPassed ? 0 : -1;
    }

    private static bool Test(string input, string expected)
    {
        string result = TextTransformer.TransformString(input);
        Console.WriteLine($"Input: {input}, Expected: {expected}, Result: {result}");
        return result == expected;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Linq;
class TextTransformer
{
    public static string TransformString(string input)
    {
        bool containsLetters = input.Any(char.IsLetter);
        if (!containsLetters)
        {
            return new string(input.Reverse().ToArray());
        }
        return new string(input.Select(c => char.IsLetter(c) ? (char.IsUpper(c) ? char.ToLower(c) : char.ToUpper(c)) : c).ToArray());
    }
    public static void Check()
    {
        Debug.Assert(TransformString("1234") == "4321");
        Debug.Assert(TransformString("abCD") == "ABcd");
        Debug.Assert(TransformString("#a@C") == "#A@c");
    }
}
class Program
{

}

假设你有一段文本，并希望根据特定的规则对其进行转换。编写一个 C# 方法，该方法将一个字符串作为输入，并应用以下转换：

- 如果字符是字母，则将其大小写从大写变为小写，或从小写变为大写。
- 如果字符串不包含任何字母，则反转整个字符串。
- 所有非字母字符应保持不变。

你的任务是实现这种转换并返回修改后的字符串。

以下是你的方法应该如何工作的几个示例：

- 如果输入是 "1234"，输出应为 "4321"。
- 如果输入是 "abCD"，输出应为 "ABcd"。
- 如果输入是 "#a@C"，输出应为 "#A@c"。

请确保包含一个函数，以用提供的示例检查你的解决方案。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextTransformer
{
    public static string TransformString(string input)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

public class DigitSorterTest
{
    public static int Main()
    {
        var testCases = new Dictionary<List<int>, List<string>>
        {
            { new List<int> { 2, 1, 1, 4, 5, 8, 2, 3 }, new List<string> { "Eight", "Five", "Four", "Three", "Two", "Two", "One", "One" } },
            { new List<int>(), new List<string>() },
            { new List<int> { 1, -1, 55 }, new List<string> { "One" } },
            { new List<int> { 9, 7, 3, 6 }, new List<string> { "Nine", "Seven", "Six", "Three" } },
            { new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9 }, new List<string> { "Nine", "Eight", "Seven", "Six", "Five", "Four", "Three", "Two", "One" } }
        };

        foreach (var testCase in testCases)
        {
            var result = DigitSorter.SortAndConvert(testCase.Key);
            if (!result.SequenceEqual(testCase.Value))
            {
                Console.WriteLine($"Test case failed for input: {string.Join(", ", testCase.Key)}");
                return -1;
            }
        }

        Console.WriteLine("All test cases passed!");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
public class DigitSorter
{
    public static List<string> SortAndConvert(List<int> numbers)
    {
        string[] numberWords = { "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
        List<int> filteredNumbers = numbers.Where(n => n >= 1 && n <= 9).ToList();
        filteredNumbers.Sort();
        filteredNumbers.Reverse();
        List<string> result = new List<string>();
        foreach (int number in filteredNumbers)
        {
            result.Add(numberWords[number - 1]);
        }
        return result;
    }
    public static void Check()
    {
        var testCases = new Dictionary<List<int>, List<string>>
        {
            { new List<int> { 2, 1, 1, 4, 5, 8, 2, 3 }, new List<string> { "Eight", "Five", "Four", "Three", "Two", "Two", "One", "One" } },
            { new List<int>(), new List<string>() },
            { new List<int> { 1, -1, 55 }, new List<string> { "One" } }
        };
        foreach (var testCase in testCases)
        {
            var result = SortAndConvert(testCase.Key);
            Debug.Assert(result.SequenceEqual(testCase.Value), "Test case failed for input: " + string.Join(", ", testCase.Key));
        }
    }
}
class Program
{

}

假设你有一组整数值，并且需要以一种非常特定的方式组织它们。你的任务是编写一个方法，该方法接收一个整数列表并执行以下操作：

1. 过滤出所有不在1到9范围内（包含1和9）的整数。
2. 对剩下的整数按升序排序。
3. 将排序后的列表反转。
4. 将每个整数转换为其对应的英文单词表示（例如，1对应"One"，2对应"Two"，等等）。

例如，如果给定的列表是`[2, 1, 1, 4, 5, 8, 2, 3]`，该方法应返回`["Eight", "Five", "Four", "Three", "Two", "Two", "One", "One"]`。如果列表为空或不包含指定范围内的整数，方法应返回一个空列表。

你能编写一个实现此任务的C#方法吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DigitSorter
{
public class DigitSorter
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class DigitWordTransformerTest
{
    public static int Main(string[] args)
    {
        var testCases = new List<List<int>>
        {
            new List<int>{2, 1, 4, 8, 3},
            new List<int>{},
            new List<int>{10, -1, 5},
            new List<int>{9, 7, 1, 6, 3},
            new List<int>{2, 2, 2, 2}
        };

        var expectedOutputs = new List<List<string>>
        {
            new List<string>{"Eight", "Four", "Three", "Two", "One"},
            new List<string>{},
            new List<string>{"Five"},
            new List<string>{"Nine", "Seven", "Six", "Three", "One"},
            new List<string>{"Two", "Two", "Two", "Two"}
        };

        int failedTests = 0;

        for (int i = 0; i < testCases.Count; i++)
        {
            var output = DigitWordTransformer.TransformDigitsToWords(testCases[i]);
            if (!output.SequenceEqual(expectedOutputs[i]))
            {
                Console.WriteLine($"Test Case {i + 1}: Fail");
                failedTests++;
            }
            else
            {
                Console.WriteLine($"Test Case {i + 1}: Pass");
            }
        }

        return failedTests == 0 ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class DigitWordTransformer
{
    public static List<string> TransformDigitsToWords(List<int> numbers)
    {
        var digitWords = new Dictionary<int, string>
        {
            {1, "One"}, {2, "Two"}, {3, "Three"}, {4, "Four"},
            {5, "Five"}, {6, "Six"}, {7, "Seven"}, {8, "Eight"}, {9, "Nine"}
        };
        return numbers
            .Where(number => digitWords.ContainsKey(number))
            .OrderBy(number => number)
            .Reverse()
            .Select(number => digitWords[number])
            .ToList();
    }
    public static void Check()
    {
        var testCases = new List<List<int>>
        {
            new List<int>{2, 1, 4, 8, 3},
            new List<int>{},
            new List<int>{10, -1, 5}
        };
        var expectedOutputs = new List<List<string>>
        {
            new List<string>{"Eight", "Four", "Three", "Two", "One"},
            new List<string>{},
            new List<string>{"Five"}
        };
        for (int i = 0; i < testCases.Count; i++)
        {
            var output = TransformDigitsToWords(testCases[i]);
            Console.WriteLine($"Test Case {i + 1}: {(output.SequenceEqual(expectedOutputs[i]) ? "Pass" : "Fail")}");
        }
    }

}

想象你有一个数字集合，你的任务是以一种非常特定的方式筛选、排序和转换这些数字。你需要关注位于特定范围内的数字，具体来说是从1到9（包括1和9）。你的工作是首先过滤掉该范围之外的数字，然后对剩下的数字进行升序排序。排序后，你需要将这些数字的顺序反转。最后，你要将每个数字转换成其对应的英文单词表示形式。例如，1变成"One"，2变成"Two"，以此类推，直到9变成"Nine"。如果输入列表为空，你的输出也应为空列表。如果列表包含范围之外的数字，只需忽略这些数字，并继续处理符合条件的数字。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DigitWordTransformer
{
    public static List<string> TransformDigitsToWords(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class StringListComparerTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1: Both lists are empty
        var result1 = StringListComparer.CompareByCharCount(new List<string>(), new List<string>());
        if (!result1.SequenceEqual(new List<string>())) {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2: First list has more characters
        var result2 = StringListComparer.CompareByCharCount(new List<string>{"apple", "banana"}, new List<string>{"cherry", "date"});
        if (!result2.SequenceEqual(new List<string>{"cherry", "date"})) {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3: Second list has more characters
        var result3 = StringListComparer.CompareByCharCount(new List<string>{"hello", "world"}, new List<string>{"hello", "universe", "!"});
        if (!result3.SequenceEqual(new List<string>{"hello", "world"})) {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4: First list has fewer characters
        var result4 = StringListComparer.CompareByCharCount(new List<string>{"short"}, new List<string>{"longer", "list", "of", "strings"});
        if (!result4.SequenceEqual(new List<string>{"short"})) {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5: Both lists have the same total character count
        var result5 = StringListComparer.CompareByCharCount(new List<string>{"one", "two"}, new List<string>{"three", "four"});
        if (!result5.SequenceEqual(new List<string>{"one", "two"})) {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed!");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class StringListComparer {
    public static List<string> CompareByCharCount(List<string> firstList, List<string> secondList) {
        int firstListTotalChars = firstList.Sum(item => item.Length);
        int secondListTotalChars = secondList.Sum(item => item.Length);
        return firstListTotalChars <= secondListTotalChars ? firstList : secondList;
    }
    public static void Check() {
        Debug.Assert(CompareByCharCount(new List<string>(), new List<string>()).SequenceEqual(new List<string>()));
        Debug.Assert(CompareByCharCount(new List<string>{"apple", "banana"}, new List<string>{"cherry", "date"}).SequenceEqual(new List<string>{"cherry", "date"}));
        Debug.Assert(CompareByCharCount(new List<string>{"hello", "world"}, new List<string>{"hello", "universe", "!"}).SequenceEqual(new List<string>{"hello", "world"}));
        Debug.Assert(CompareByCharCount(new List<string>{"short"}, new List<string>{"longer", "list", "of", "strings"}).SequenceEqual(new List<string>{"short"}));
        Console.WriteLine("All checks passed!");
    }

}

想象一下，你正在进行一个项目，需要对比两个文本数据集合，具体来说是两个字符串列表。你的任务是编写一个方法，该方法接受这两个列表作为输入，确定哪个列表的总字符数更少。如果两个列表的字符数相等，你的方法应返回第一个列表。在需要通过选择更紧凑的数据集来优化数据存储或传输的情况下，这种功能可能会很有用。你能用C#编写一个方法来完成这个任务吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class StringListComparer
{
    public static List<string> CompareByCharCount(List<string> firstList, List<string> secondList) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class TextAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        var testSentence1 = "Hello, world! Welcome to coding.";
        var expectedOutput1 = new List<string> { "Hello", "world!", "Welcome", "to", "coding." };
        var result1 = TextAnalyzer.ExtractWordsFromSentence(testSentence1);
        if (!result1.SequenceEqual(expectedOutput1))
        {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        var testSentence2 = "C#, Java, Python, and JavaScript.";
        var expectedOutput2 = new List<string> { "C#", "Java", "Python", "and", "JavaScript." };
        var result2 = TextAnalyzer.ExtractWordsFromSentence(testSentence2);
        if (!result2.SequenceEqual(expectedOutput2))
        {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        var testSentence3 = "One, two, three, four, five.";
        var expectedOutput3 = new List<string> { "One", "two", "three", "four", "five." };
        var result3 = TextAnalyzer.ExtractWordsFromSentence(testSentence3);
        if (!result3.SequenceEqual(expectedOutput3))
        {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        var testSentence4 = "No,spaces,or,commas";
        var expectedOutput4 = new List<string> { "No", "spaces", "or", "commas" };
        var result4 = TextAnalyzer.ExtractWordsFromSentence(testSentence4);
        if (!result4.SequenceEqual(expectedOutput4))
        {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        var testSentence5 = "  Leading and trailing spaces  ";
        var expectedOutput5 = new List<string> { "Leading", "and", "trailing", "spaces" };
        var result5 = TextAnalyzer.ExtractWordsFromSentence(testSentence5);
        if (!result5.SequenceEqual(expectedOutput5))
        {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class TextAnalyzer
{
    public static List<string> ExtractWordsFromSentence(string sentence)
    {
        char[] delimiters = new char[] { ',', ' ' };
        List<string> words = sentence.Split(delimiters, StringSplitOptions.RemoveEmptyEntries).ToList();
        return words;
    }
    public static void CheckFunction()
    {
        var testSentence1 = "Hello, world! Welcome to coding.";
        var expectedOutput1 = new List<string> { "Hello", "world!", "Welcome", "to", "coding." };
        Debug.Assert(ExtractWordsFromSentence(testSentence1).SequenceEqual(expectedOutput1));
        var testSentence2 = "C#, Java, Python, and JavaScript.";
        var expectedOutput2 = new List<string> { "C#", "Java", "Python", "and", "JavaScript." };
        Debug.Assert(ExtractWordsFromSentence(testSentence2).SequenceEqual(expectedOutput2));
        Console.WriteLine("All tests passed successfully.");
    }

}

想象一下你正在开发一个文本处理应用程序，您需要分析句子。您当前的任务是编写一个方法，接受一个句子作为输入，并将该句子中的每个单词作为列表的元素返回。该句子可以用空格或逗号分隔。例如，如果输入是 "Hello, world! Welcome to coding."，您的方法应返回一个包含 ["Hello", "world!", "Welcome", "to", "coding."] 的列表。您如何在 C# 中设计这样一个方法来高效地完成此任务？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextAnalyzer
{
    public static List<string> ExtractWordsFromSentence(string sentence)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class HexadecimalConverterTest {
    public static bool RunTests() {
        var testData = new Dictionary<int, string> {
            { 255, "hxffhx" },
            { 10, "hxahx" },
            { 16, "hx10hx" },
            { 0, "hx0hx" },
            { 1024, "hx400hx" }
        };

        foreach (var test in testData) {
            var result = HexadecimalConverter.ConvertToHex(test.Key);
            if (result != test.Value) {
                Console.WriteLine($"Test failed for input {test.Key}: Expected {test.Value}, got {result}");
                return false;
            }
        }
        return true;
    }

    public static void Main(string[] args) {
        if (RunTests()) {
            Console.WriteLine("All tests passed.");
            System.Environment.Exit(0);
        } else {
            Console.WriteLine("Some tests failed.");
            System.Environment.Exit(-1);
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class HexadecimalConverter {
    public static string ConvertToHex(int number) {
        return "hx" + number.ToString("X").ToLower() + "hx";
    }

    public static bool CheckConversion() {
        var testData = new Dictionary<int, string> {
            { 255, "hxffhx" },
            { 10, "hxahx" },
            { 16, "hx10hx" },
            { 0, "hx0hx" }
        };
        foreach (var test in testData) {
            var result = ConvertToHex(test.Key);
            if (result != test.Value) {
                Console.WriteLine($"Test failed for input {test.Key}: Expected {test.Value}, got {result}");
                return false;
            }
        }
        return true;
    }
}

编写一个C#程序，该程序接受一个整数输入并将其转换为十六进制字符串。输出字符串应以字符 'hx' 开始和结束以表示格式。例如，将整数255转换的结果应为输出 "hxffhx"。确保您的解决方案包含所有必要的导入并且是完全独立的。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class HexadecimalConverter
{
    public static string ConvertToHex(int number) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class ScoreComparerTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        var result1 = ScoreComparer.CompareScores(new List<int>{1, 2, 3, 4, 5, 1}, new List<int>{1, 2, 3, 4, 2, -2});
        var expected1 = new List<int>{0, 0, 0, 0, 3, 3};
        allTestsPassed &= result1.SequenceEqual(expected1);
        Console.WriteLine($"Test 1 Passed: {result1.SequenceEqual(expected1)}");

        // Test Case 2
        var result2 = ScoreComparer.CompareScores(new List<int>{0, 5, 0, 0, 0, 4}, new List<int>{4, 1, 1, 0, 0, -2});
        var expected2 = new List<int>{4, 4, 1, 0, 0, 6};
        allTestsPassed &= result2.SequenceEqual(expected2);
        Console.WriteLine($"Test 2 Passed: {result2.SequenceEqual(expected2)}");

        // Test Case 3
        var result3 = ScoreComparer.CompareScores(new List<int>{10, 20, 30, 40, 50}, new List<int>{10, 25, 30, 45, 55});
        var expected3 = new List<int>{0, 5, 0, 5, 5};
        allTestsPassed &= result3.SequenceEqual(expected3);
        Console.WriteLine($"Test 3 Passed: {result3.SequenceEqual(expected3)}");

        if (allTestsPassed) {
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class ScoreComparer {
    public static List<int> CompareScores(List<int> actualScores, List<int> predictedScores) {
        List<int> accuracyResults = new List<int>();
        for (int i = 0; i < actualScores.Count; i++) {
            accuracyResults.Add(Math.Abs(actualScores[i] - predictedScores[i]));
        }
        return accuracyResults;
    }
    public static void Check() {
        var result1 = CompareScores(new List<int>{1, 2, 3, 4, 5, 1}, new List<int>{1, 2, 3, 4, 2, -2});
        var expected1 = new List<int>{0, 0, 0, 0, 3, 3};
        Console.WriteLine($"Test 1 Passed: {result1.SequenceEqual(expected1)}");
        var result2 = CompareScores(new List<int>{0, 5, 0, 0, 0, 4}, new List<int>{4, 1, 1, 0, 0, -2});
        var expected2 = new List<int>{4, 4, 1, 0, 0, 6};
        Console.WriteLine($"Test 2 Passed: {result2.SequenceEqual(expected2)}");
    }
}
class Program {

}

想象一下，你在跟踪一系列比赛的预测比分。在所有比赛结束后，你想看看你的预测与实际结果的匹配情况。写一个程序来比较预测的比分和比赛的实际比分。你的程序应该接受两个列表作为输入：一个是实际比分，另一个是预测比分，两个列表的长度应该相同。然后它应该返回一个列表，指示预测的准确性。对于每场比赛，如果预测完全正确，则结果应为0。否则，结果应为预测比分与实际比分之间的绝对差值。你能设计一个解决这个任务的方法吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ScoreComparer
{
    public static List<int> CompareScores(List<int> actualScores, List<int> predictedScores) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class DataAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        var result1 = DataAnalyzer.FindCommonDescending(new List<int> { 1, 4, 3, 34, 653, 2, 5 }, new List<int> { 5, 7, 1, 9, 653, 121 });
        var expected1 = new List<int> { 653, 5, 1 };
        allTestsPassed &= result1.SequenceEqual(expected1);

        // Test Case 2
        var result2 = DataAnalyzer.FindCommonDescending(new List<int> { 5, 3, 2, 8 }, new List<int> { 3, 2 });
        var expected2 = new List<int> { 3, 2 };
        allTestsPassed &= result2.SequenceEqual(expected2);

        // Test Case 3
        var result3 = DataAnalyzer.FindCommonDescending(new List<int> { 10, 20, 30, 40 }, new List<int> { 10, 20, 30, 40 });
        var expected3 = new List<int> { 40, 30, 20, 10 };
        allTestsPassed &= result3.SequenceEqual(expected3);

        // Test Case 4
        var result4 = DataAnalyzer.FindCommonDescending(new List<int> { 1, 2, 3 }, new List<int> { 4, 5, 6 });
        var expected4 = new List<int> { };
        allTestsPassed &= result4.SequenceEqual(expected4);

        // Test Case 5
        var result5 = DataAnalyzer.FindCommonDescending(new List<int> { -1, -2, -3 }, new List<int> { -3, -2, -1 });
        var expected5 = new List<int> { -1, -2, -3 };
        allTestsPassed &= result5.SequenceEqual(expected5);

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class DataAnalyzer
{
    public static List<int> FindCommonDescending(List<int> firstList, List<int> secondList)
    {
        var commonElements = new SortedSet<int>(firstList.Intersect(secondList)).Reverse().ToList();
        return commonElements;
    }
    public static void Check()
    {
        var result1 = FindCommonDescending(new List<int> { 1, 4, 3, 34, 653, 2, 5 }, new List<int> { 5, 7, 1, 9, 653, 121 });
        Console.WriteLine($"Result 1: {string.Join(", ", result1)}");
        var result2 = FindCommonDescending(new List<int> { 5, 3, 2, 8 }, new List<int> { 3, 2 });
        Console.WriteLine($"Result 2: {string.Join(", ", result2)}");
    }
}
class Program
{

}

试想一下，您正在进行一个项目，需要分析来自两个不同来源的数据。您的任务是找到两个数据集都包含的元素，但有一个要求。您需要确保这些公共元素不仅是唯一的，还要按降序排列。比如，如果您在比较两个季度的销售数据，您需要找出在两个时期都很受欢迎的产品，并按销售量从高到低的顺序列出。您能编写一个实现这个功能的函数吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataAnalyzer
{
    public static List<int> FindCommonDescending(List<int> firstList, List<int> secondList)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class MusicParserTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1
        List<int> result1 = MusicParser.InterpretMusic("W H+ Q");
        List<int> expected1 = new List<int> { 4, 2, 1 };
        allTestsPassed &= result1.SequenceEqual(expected1);

        // Test case 2
        List<int> result2 = MusicParser.InterpretMusic("H+ Q Q W");
        List<int> expected2 = new List<int> { 2, 1, 1, 4 };
        allTestsPassed &= result2.SequenceEqual(expected2);

        // Test case 3
        List<int> result3 = MusicParser.InterpretMusic("W W W");
        List<int> expected3 = new List<int> { 4, 4, 4 };
        allTestsPassed &= result3.SequenceEqual(expected3);

        // Test case 4
        List<int> result4 = MusicParser.InterpretMusic("Q Q Q Q");
        List<int> expected4 = new List<int> { 1, 1, 1, 1 };
        allTestsPassed &= result4.SequenceEqual(expected4);

        // Test case 5
        List<int> result5 = MusicParser.InterpretMusic("H+ H+ H+ H+");
        List<int> expected5 = new List<int> { 2, 2, 2, 2 };
        allTestsPassed &= result5.SequenceEqual(expected5);

        if (allTestsPassed)
        {
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class MusicParser
{
    public static List<int> InterpretMusic(string musicNotes)
    {
        List<int> durations = new List<int>();
        string[] notes = musicNotes.Split(' ');
        foreach (string note in notes)
        {
            switch (note)
            {
                case "W":
                    durations.Add(4);
                    break;
                case "H+":
                    durations.Add(2);
                    break;
                case "Q":
                    durations.Add(1);
                    break;
            }
        }
        return durations;
    }
    public static void Check()
    {
        var result = InterpretMusic("W H+ Q H+ H+ Q Q Q Q W W");
        var expected = new List<int> { 4, 2, 1, 2, 2, 1, 1, 1, 1, 4, 4 };
        Console.WriteLine($"Result: {string.Join(", ", result)}");
        Console.WriteLine($"Expected: {string.Join(", ", expected)}");
        Console.WriteLine($"Correct: {result.SequenceEqual(expected)}");
    }
}
class Program
{

}

假设你正在为一个数字乐谱应用程序开发一个软件模块。你需要编写一个函数来解释一串表示不同类型音乐符号及其时值的ASCII字符。输入字符串将包含映射到乐符时值的符号，并以一种简单的编码方案进行表示，你的任务是将此字符串转换为一个整数列表，其中每个整数代表输入字符串中相应乐符的时值。编码方案如下：

- 'W' 表示一个全音符，持续4拍。
- 'H' 后面加一个 '+' (即 'H+') 表示一个二分音符，持续2拍。
- 'Q' 表示一个四分音符，持续1拍。

例如，给定输入字符串 "W H+ Q H+ H+ Q Q Q Q W W"，你的函数应返回一个对应每个乐符在拍子中持续时间的整数列表。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class MusicParser
{
    public static List<int> InterpretMusic(string musicNotes)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class SequenceAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1
        List<int> test1 = new List<int> { 1, 2, 4, 3, 5 };
        int result1 = SequenceAnalyzer.FindDescendingIndex(test1);
        if (result1 != 3)
        {
            Console.WriteLine($"Test 1 failed: Expected 3, got {result1}");
            allTestsPassed = false;
        }

        // Test case 2
        List<int> test2 = new List<int> { 1, 2, 3 };
        int result2 = SequenceAnalyzer.FindDescendingIndex(test2);
        if (result2 != -1)
        {
            Console.WriteLine($"Test 2 failed: Expected -1, got {result2}");
            allTestsPassed = false;
        }

        // Test case 3
        List<int> test3 = new List<int> { 5, 4, 3, 2, 1 };
        int result3 = SequenceAnalyzer.FindDescendingIndex(test3);
        if (result3 != 1)
        {
            Console.WriteLine($"Test 3 failed: Expected 1, got {result3}");
            allTestsPassed = false;
        }

        // Test case 4
        List<int> test4 = new List<int> { 10, 20, 30, 25, 40 };
        int result4 = SequenceAnalyzer.FindDescendingIndex(test4);
        if (result4 != 3)
        {
            Console.WriteLine($"Test 4 failed: Expected 3, got {result4}");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All test cases passed successfully.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class SequenceAnalyzer
{
    public static int FindDescendingIndex(List<int> numbers)
    {
        for (int i = 1; i < numbers.Count; i++)
        {
            if (numbers[i] < numbers[i - 1])
            {
                return i;
            }
        }
        return -1;
    }
    ) == 3);
        Debug.Assert(FindDescendingIndex(new List<int>{1, 2, 3}) == -1);
        Debug.Assert(FindDescendingIndex(new List<int>{5, 4, 3, 2, 1}) == 1);
        Debug.Assert(FindDescendingIndex(new List<int>{10, 20, 30, 25, 40}) == 3);
        Console.WriteLine("All test cases passed successfully.");
    }
}

想象你正在开发一个数据分析工具，你需要在数据集中找到一个特定的模式。具体来说，你在寻找一个序列中第一次出现前一个数字大于后一个数字的情况。你正在处理一个唯一整数的列表，你想要确定破坏升序顺序的数字的位置。如果所有数字都是升序排列的，你的函数应该返回 -1，表明序列已经排序好。你能写一个 C# 函数来完成这个任务吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class SequenceAnalyzer
{
    public static int FindDescendingIndex(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class TextAnalyzerTest {
    public static int RunTests() {
        bool allTestsPassed = true;

        // Test case 1
        int result1 = TextAnalyzer.UniqueLetterCount("Hello, World! 123");
        if (result1 != 7) {
            Console.WriteLine($"Test 1 failed: Expected 7, got {result1}");
            allTestsPassed = false;
        }

        // Test case 2
        int result2 = TextAnalyzer.UniqueLetterCount("Apple123");
        if (result2 != 4) {
            Console.WriteLine($"Test 2 failed: Expected 4, got {result2}");
            allTestsPassed = false;
        }

        // Test case 3
        int result3 = TextAnalyzer.UniqueLetterCount("Function!@#");
        if (result3 != 7) {
            Console.WriteLine($"Test 3 failed: Expected 7, got {result3}");
            allTestsPassed = false;
        }

        // Test case 4
        int result4 = TextAnalyzer.UniqueLetterCount("1234567890");
        if (result4 != 0) {
            Console.WriteLine($"Test 4 failed: Expected 0, got {result4}");
            allTestsPassed = false;
        }

        // Test case 5
        int result5 = TextAnalyzer.UniqueLetterCount("AaBbCc");
        if (result5 != 3) {
            Console.WriteLine($"Test 5 failed: Expected 3, got {result5}");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All tests passed!");
            return 0;
        } else {
            return -1;
        }
    }

    static void Main(string[] args) {
        int result = RunTests();
        Environment.Exit(result);
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class TextAnalyzer {
    public static int UniqueLetterCount(string input) {
        var lettersOnly = input.ToLower().Where(char.IsLetter);
        HashSet<char> uniqueLetters = new HashSet<char>(lettersOnly);
        return uniqueLetters.Count;
    }
    public static void Check() {
        Debug.Assert(UniqueLetterCount("Hello, World! 123") == 7);
        Debug.Assert(UniqueLetterCount("Apple123") == 4);
        Debug.Assert(UniqueLetterCount("Function!@#") == 7);
        Debug.Assert(UniqueLetterCount("1234567890") == 0);
        Debug.Assert(UniqueLetterCount("AaBbCc") == 3);
        Console.WriteLine("All checks passed!");
    }

}

假设你正在开发一个文本分析工具，需要找出给定文本中有多少不重复的字母，忽略任何数字或特殊字符，并且不区分大小写。例如，如果有人输入 "Hello, World! 123"，你的工具应该告诉他们这里有 7 个不重复的字母。你能写一个实现此功能的 C# 程序吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextAnalyzer
{
    public static int UniqueLetterCount(string input) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;

#<INSERT>

class TextFormatterTest
{
    public static int Main(string[] args)
    {
        var testData = new Dictionary<string, string>
        {
            { "This is a test", "This_is_a_test" },
            { "This   is  a    test", "This-is_a-test" },
            { "  Leading and trailing  ", "_Leading_and_trailing_" },
            { "NoSpaces", "NoSpaces" },
            { "     Multiple     spaces    ", "-Multiple-spaces-" }
        };

        foreach (var test in testData)
        {
            string result = TextFormatter.FormatText(test.Key);
            if (result != test.Value)
            {
                Console.WriteLine($"Fail: \"{test.Key}\" -> \"{result}\" (Expected: \"{test.Value}\")");
                return -1;
            }
        }

        Console.WriteLine("All tests passed!");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Text.RegularExpressions;
class TextFormatter
{
    public static string FormatText(string input)
    {
        string result = Regex.Replace(input, @"\s{3,}", "-");
        result = Regex.Replace(result, @"\s{1,2}", "_");
        return result;
    }
}
class Program
{
    public static void CheckFormatting()
    {
        var testData = new Dictionary<string, string>
        {
            { "This is a test", "This_is_a_test" },
            { "This   is  a    test", "This-is_a-test" },
            { "  Leading and trailing  ", "_Leading_and_trailing_" },
            { "NoSpaces", "NoSpaces" },
            { "     Multiple     spaces    ", "-Multiple-spaces-" }
        };
        foreach (var test in testData)
        {
            string result = TextFormatter.FormatText(test.Key);
            if (result == test.Value)
            {
                Console.WriteLine($"Pass: \"{test.Key}\" -> \"{result}\"");
            }
            else
            {
                Console.WriteLine($"Fail: \"{test.Key}\" -> \"{result}\" (Expected: \"{test.Value}\")");
            }
        }
    }

}

你在为一个新应用程序编写一个文本处理模块，并且遇到了需要解决的特定格式问题。任务是编写一个方法，该方法接收一个字符串作为输入，并执行以下转换：

1. 每个一到两个空格的实例都应替换为一个下划线（`_`）。
2. 任何三个或更多连续空格的出现都应替换为一个破折号（`-`）。

目标是确保文本符合特定格式以便进一步处理。你需要做的是：

- 在一个名为 `TextFormatter` 的类中实现一个名为 `FormatText` 的方法。
- 该方法应接受一个字符串参数，并根据上述规则返回一个修改后的字符串。
- 确保处理一些边缘情况，比如以空格开始或结束的字符串，或者包含长序列空格的字符串。

为了验证实现的正确性，包含一个名为 `CheckFormatting` 的方法，用以测试 `FormatText` 方法在各种情况下是否成功并打印出结果。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextFormatter
{
    public static string FormatText(string input)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class ArrayProcessorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        int[] testArray1 = {1, -2, 3, 0};
        int[] expectedOutput1 = {0, 1, 9};
        if (!ArrayProcessor.FilterAndSquare(testArray1).SequenceEqual(expectedOutput1)) {
            Console.WriteLine("Test case 1 failed.");
            allTestsPassed = false;
        }

        // Test case 2
        int[] testArray2 = {-1, -3, -5, 2, 4, 6};
        int[] expectedOutput2 = {4, 16, 36};
        if (!ArrayProcessor.FilterAndSquare(testArray2).SequenceEqual(expectedOutput2)) {
            Console.WriteLine("Test case 2 failed.");
            allTestsPassed = false;
        }

        // Test case 3
        int[] testArray3 = {-10, -20};
        int[] expectedOutput3 = {};
        if (!ArrayProcessor.FilterAndSquare(testArray3).SequenceEqual(expectedOutput3)) {
            Console.WriteLine("Test case 3 failed.");
            allTestsPassed = false;
        }

        // Test case 4
        int[] testArray4 = {-1, 0, 1, 2, 3};
        int[] expectedOutput4 = {0, 1, 4, 9};
        if (!ArrayProcessor.FilterAndSquare(testArray4).SequenceEqual(expectedOutput4)) {
            Console.WriteLine("Test case 4 failed.");
            allTestsPassed = false;
        }

        // Test case 5
        int[] testArray5 = {5, 7, 11};
        int[] expectedOutput5 = {25, 49, 121};
        if (!ArrayProcessor.FilterAndSquare(testArray5).SequenceEqual(expectedOutput5)) {
            Console.WriteLine("Test case 5 failed.");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class ArrayProcessor {
    public static int[] FilterAndSquare(int[] arr) {
        return arr.Where(x => x >= 0).Select(x => x * x).OrderBy(x => x).ToArray();
    }
    public static void CheckCorrectness() {
        int[] testArray1 = {1, -2, 3, 0};
        int[] expectedOutput1 = {0, 1, 9};
        Debug.Assert(FilterAndSquare(testArray1).SequenceEqual(expectedOutput1));
        int[] testArray2 = {-1, -3, -5, 2, 4, 6};
        int[] expectedOutput2 = {4, 16, 36};
        Debug.Assert(FilterAndSquare(testArray2).SequenceEqual(expectedOutput2));
        int[] testArray3 = {-10, -20};
        int[] expectedOutput3 = {};
        Debug.Assert(FilterAndSquare(testArray3).SequenceEqual(expectedOutput3));
        Console.WriteLine("All test cases passed successfully.");
    }

}

你能否编写一个方法，该方法将接受一个整数数组作为输入，过滤掉所有负数，然后将剩余的数字平方，并返回一个排序后的平方数字数组？输入始终是一个整数数组，可能包含正数、负数以及零。输出应为按升序排序的整数数组。不需要使用任何外部库来完成此任务。另外，编写一个函数，用一些预定义的数据点来测试你的方法是否正确。

例如，如果输入数组是 `[1, -2, 3, 0]`，输出应为 `[0, 1, 9]`，因为 `-2` 是负数因此被移除，而 `1`、`3` 和 `0` 被平方并排序。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ArrayProcessor
{
    public static int[] FilterAndSquare(int[] arr) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class ListMultiplierSumTest {
    public static int RunTests() {
        bool allTestsPassed = true;

        // Test Case 1
        int result1 = ListMultiplierSum.MultiplyAndSum(new List<int>{1, 2, 3}, 2);
        if (result1 != 12) {
            Console.WriteLine($"Test Case 1 Failed: Expected 12, got {result1}");
            allTestsPassed = false;
        }

        // Test Case 2
        int result2 = ListMultiplierSum.MultiplyAndSum(new List<int>{4, 5, 6}, 3);
        if (result2 != 45) {
            Console.WriteLine($"Test Case 2 Failed: Expected 45, got {result2}");
            allTestsPassed = false;
        }

        // Test Case 3
        int result3 = ListMultiplierSum.MultiplyAndSum(new List<int>{-1, 0, 1}, 1);
        if (result3 != 0) {
            Console.WriteLine($"Test Case 3 Failed: Expected 0, got {result3}");
            allTestsPassed = false;
        }

        // Test Case 4
        int result4 = ListMultiplierSum.MultiplyAndSum(new List<int>{0, 0, 0}, 10);
        if (result4 != 0) {
            Console.WriteLine($"Test Case 4 Failed: Expected 0, got {result4}");
            allTestsPassed = false;
        }

        // Test Case 5
        int result5 = ListMultiplierSum.MultiplyAndSum(new List<int>{10, 20, 30}, -1);
        if (result5 != -60) {
            Console.WriteLine($"Test Case 5 Failed: Expected -60, got {result5}");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed!");
            return 0;
        } else {
            return -1;
        }
    }

    static void Main(string[] args) {
        int result = RunTests();
        Environment.Exit(result);
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class ListMultiplierSum {
    public static int MultiplyAndSum(List<int> numbers, int multiplier) {
        int sum = 0;
        foreach (int number in numbers) {
            sum += number * multiplier;
        }
        return sum;
    }
    public static void CheckFunction() {
        Debug.Assert(MultiplyAndSum(new List<int>{1, 2, 3}, 2) == 12, "Test Case 1 Failed");
        Debug.Assert(MultiplyAndSum(new List<int>{4, 5, 6}, 3) == 45, "Test Case 2 Failed");
        Debug.Assert(MultiplyAndSum(new List<int>{-1, 0, 1}, 1) == 0, "Test Case 3 Failed");
        Console.WriteLine("All test cases passed!");
    }

}

嘿，你能帮我做一个小编程任务吗？我需要一个方法，它接受一个整数列表，把每个元素乘以一个特定的数字，然后将列表中的所有元素相加。特殊之处在于，我希望这个功能被封装在一个简单的C#程序中。你能不能也包括一种方法来检查这个方法是否正确工作，并附上几个测试用例？例如，如果我们将每个元素乘以2，我们的列表是[1, 2, 3]，结果应该是12，因为(1*2) + (2*2) + (3*2) = 12。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ListMultiplierSum
{
    public static int MultiplyAndSum(List<int> numbers, int multiplier) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class DistinctAndSortedTest {
    public static int Main(string[] args) {
        var testCases = new List<Tuple<List<int>, List<int>>> {
            Tuple.Create(new List<int>{ 4, 2, 7, 3, 2, 4 }, new List<int>{ 2, 3, 4, 7 }),
            Tuple.Create(new List<int>{ 1, 5, 3, 9, 5, 3 }, new List<int>{ 1, 3, 5, 9 }),
            Tuple.Create(new List<int>{ 10, 8, 10, 8 }, new List<int>{ 8, 10 }),
            Tuple.Create(new List<int>{ 5, 5, 5, 5, 5 }, new List<int>{ 5 }),
            Tuple.Create(new List<int>{ 1, 2, 3, 4, 5 }, new List<int>{ 1, 2, 3, 4, 5 })
        };

        bool allTestsPassed = true;

        foreach (var testCase in testCases) {
            var result = DistinctAndSorted.FilterAndSort(testCase.Item1);
            bool isEqual = result.SequenceEqual(testCase.Item2);
            Console.WriteLine($"Input: [{String.Join(", ", testCase.Item1)}] | Expected: [{String.Join(", ", testCase.Item2)}] | Result: [{String.Join(", ", result)}] | Correct: {isEqual}");
            if (!isEqual) {
                allTestsPassed = false;
            }
        }

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class DistinctAndSorted {
    public static List<int> FilterAndSort(List<int> numbers) {
        List<int> distinctSorted = numbers.Distinct().OrderBy(n => n).ToList();
        return distinctSorted;
    }
    public static void Check() {
        var testCases = new Dictionary<List<int>, List<int>> {
            { new List<int>{ 4, 2, 7, 3, 2, 4 }, new List<int>{ 2, 3, 4, 7 } },
            { new List<int>{ 1, 5, 3, 9, 5, 3 }, new List<int>{ 1, 3, 5, 9 } },
            { new List<int>{ 10, 8, 10, 8 }, new List<int>{ 8, 10 } }
        };
        foreach (var testCase in testCases) {
            var result = FilterAndSort(testCase.Key);
            bool isEqual = result.SequenceEqual(testCase.Value);
            Console.WriteLine($"Input: [{String.Join(", ", testCase.Key)}] | Expected: [{String.Join(", ", testCase.Value)}] | Result: [{String.Join(", ", result)}] | Correct: {isEqual}");
        }
    }

}

你能编写一个C#程序来过滤和排序一个数字集合吗？具体来说，我需要一个函数，它接受一个整数列表作为输入，并返回一个新的列表，其中仅包含原始列表中的唯一元素，按升序排序。例如，如果输入列表是 `[4, 2, 7, 3, 2, 4]`，输出应该是 `[2, 3, 4, 7]`。请确保包括必要的导入，并通过给定的测试用例验证函数的正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DistinctAndSorted
{
    public static List<int> FilterAndSort(List<int> numbers) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class DataProcessorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test 1
        List<int> test1 = new List<int>{5, 3, 5, 2, 3, 3, 9, 0, 123};
        List<int> expected1 = new List<int>{0, 2, 3, 5, 9, 123};
        allTestsPassed &= DataProcessor.RemoveDuplicatesAndSort(test1).SequenceEqual(expected1);

        // Test 2
        List<int> test2 = new List<int>{-1, -3, -1, 0, -3, 1, 2};
        List<int> expected2 = new List<int>{-3, -1, 0, 1, 2};
        allTestsPassed &= DataProcessor.RemoveDuplicatesAndSort(test2).SequenceEqual(expected2);

        // Test 3
        List<int> test3 = new List<int>{1, 2, 3, 4, 5};
        List<int> expected3 = new List<int>{1, 2, 3, 4, 5};
        allTestsPassed &= DataProcessor.RemoveDuplicatesAndSort(test3).SequenceEqual(expected3);

        // Test 4
        List<int> test4 = new List<int>{5, 4, 3, 2, 1};
        List<int> expected4 = new List<int>{1, 2, 3, 4, 5};
        allTestsPassed &= DataProcessor.RemoveDuplicatesAndSort(test4).SequenceEqual(expected4);

        // Test 5
        List<int> test5 = new List<int>{};
        List<int> expected5 = new List<int>{};
        allTestsPassed &= DataProcessor.RemoveDuplicatesAndSort(test5).SequenceEqual(expected5);

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class DataProcessor {
    public static List<int> RemoveDuplicatesAndSort(List<int> numbers) {
        HashSet<int> uniqueNumbers = new HashSet<int>(numbers);
        List<int> sortedNumbers = uniqueNumbers.ToList();
        sortedNumbers.Sort();
        return sortedNumbers;
    }
    public static void Test() {
        List<int> test1 = new List<int>{5, 3, 5, 2, 3, 3, 9, 0, 123};
        List<int> expected1 = new List<int>{0, 2, 3, 5, 9, 123};
        Console.WriteLine($"Test 1 Passed: {RemoveDuplicatesAndSort(test1).SequenceEqual(expected1)}");
        List<int> test2 = new List<int>{-1, -3, -1, 0, -3, 1, 2};
        List<int> expected2 = new List<int>{-3, -1, 0, 1, 2};
        Console.WriteLine($"Test 2 Passed: {RemoveDuplicatesAndSort(test2).SequenceEqual(expected2)}");
    }

}

嘿，你好！我今天早些时候在写一段代码，这段代码应该从一个列表中过滤掉所有的重复数字，然后按升序排序。不过，我被拉去做别的事了，所以没完成。列表包含整数，我需要最终的列表只包含唯一的数字，并按从小到大的顺序排列。你能帮我写一个C#函数来实现这个功能吗？如果你能包括一个简单的方法来验证这个函数是否按预期工作，并提供几个示例，那就太好了。谢谢！

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class DataProcessor
{
    public static void Test() {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class SolutionTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test case 1
        int result1 = Solution.SumOfEvens(new List<int> { 2, 5, 8, 11, 14 });
        if (result1 != 24) {
            Console.WriteLine($"Test case 1 failed: Expected 24, got {result1}");
            allTestsPassed = false;
        }

        // Test case 2
        int result2 = Solution.SumOfEvens(new List<int> { -2, 3, -4, 5, -6 });
        if (result2 != -12) {
            Console.WriteLine($"Test case 2 failed: Expected -12, got {result2}");
            allTestsPassed = false;
        }

        // Test case 3
        int result3 = Solution.SumOfEvens(new List<int> { 1, 3, 5, 7 });
        if (result3 != 0) {
            Console.WriteLine($"Test case 3 failed: Expected 0, got {result3}");
            allTestsPassed = false;
        }

        // Test case 4
        int result4 = Solution.SumOfEvens(new List<int> { 0, -2, 4, 6 });
        if (result4 != 8) {
            Console.WriteLine($"Test case 4 failed: Expected 8, got {result4}");
            allTestsPassed = false;
        }

        // Test case 5
        int result5 = Solution.SumOfEvens(new List<int> { 10, 20, 30, 40, 50 });
        if (result5 != 150) {
            Console.WriteLine($"Test case 5 failed: Expected 150, got {result5}");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class Solution {
    public static int SumOfEvens(List<int> numbers) {
        int sum = 0;
        foreach (int num in numbers) {
            if (num % 2 == 0) {
                sum += num;
            }
        }
        return sum;
    }
    public static void CheckFunction() {
        Debug.Assert(SumOfEvens(new List<int>{2, 5, 8, 11, 14}) == 24);
        Debug.Assert(SumOfEvens(new List<int>{-2, 3, -4, 5, -6}) == -12);
        Debug.Assert(SumOfEvens(new List<int>{1, 3, 5, 7}) == 0);
        Debug.Assert(SumOfEvens(new List<int>{0, -2, 4, 6}) == 8);
        Console.WriteLine("All test cases passed successfully.");
    }

}

你能写一个 C# 方法来找到给定整数列表中所有偶数的和吗？你的方法应该能够处理提供给它的任何整数列表，并返回只有偶数的和。例如，如果该方法给定一个包含 [2, 5, 8, 11, 14] 的列表，它应该返回 24，因为 2、8 和 14 是偶数，它们的和是 24。确保包含所有必要的导入，并确保你的代码段是自包含的。另外，包含一个函数来测试你的方法，使用不同的数据点来验证其正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class Solution
{
    public static int SumOfEvens(List<int> numbers) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class InterestCalculatorTest {
    public static void Main(string[] args) {
        int result = RunTests();
        Environment.Exit(result);
    }

    private static int RunTests() {
        bool allTestsPassed = true;

        // Test Case 1
        allTestsPassed &= TestExtractFractionalInterest(2.75, 0.75);
        // Test Case 2
        allTestsPassed &= TestExtractFractionalInterest(0.99, 0.99);
        // Test Case 3
        allTestsPassed &= TestExtractFractionalInterest(5.01, 0.01);
        // Test Case 4
        allTestsPassed &= TestExtractFractionalInterest(3.5, 0.5);
        // Test Case 5
        allTestsPassed &= TestExtractFractionalInterest(10.0, 0.0);

        return allTestsPassed ? 0 : -1;
    }

    private static bool TestExtractFractionalInterest(double input, double expected) {
        double result = InterestCalculator.ExtractFractionalInterest(input);
        if (Math.Abs(result - expected) < 0.0001) {
            Console.WriteLine($"Test passed for input {input}: Expected {expected}, got {result}");
            return true;
        } else {
            Console.WriteLine($"Test failed for input {input}: Expected {expected}, got {result}");
            return false;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class InterestCalculator {
    public static double ExtractFractionalInterest(double interestEarned) {
        double wholeNumberPart = Math.Floor(interestEarned);
        double fractionalPart = interestEarned - wholeNumberPart;
        return fractionalPart;
    }
    public static void CheckFractionalInterest() {
        double[] testInterests = {2.75, 0.99, 5.01, 3.5};
        double[] expectedResults = {0.75, 0.99, 0.01, 0.5};
        for (int i = 0; i < testInterests.Length; i++) {
            double result = ExtractFractionalInterest(testInterests[i]);
            Console.WriteLine($"Test {i+1}: Interest = {testInterests[i]}, Expected Fraction = {expectedResults[i]}, Calculated Fraction = {result}");
            Debug.Assert(Math.Abs(result - expectedResults[i]) < 0.0001, "The calculated fraction is not as expected.");
        }
    }
}
class Program {

}

你正在开发一个金融应用程序，你需要计算各种账户在一天结束时获得的利息。利息计算是基于账户余额和日利率的。然而，出于报告目的，你需要将利息的整数部分（这部分将被添加到账户余额）和小数部分（这部分将被分别跟踪并在累积到整数时添加）分开。编写一个C#方法，该方法接受一个表示一天内获得的利息的浮点数，并返回其小数部分。

例如，如果获得的利息是2.75，你的方法应该返回0.75。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class InterestCalculator
{
    public static double ExtractFractionalInterest(double interestEarned) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class SolutionTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        List<int> test1 = new List<int>{2, 4, 6};
        List<int> expected1 = new List<int>{4, 8, 12};
        List<int> result1 = Solution.DoubleElements(test1);
        if (!result1.SequenceEqual(expected1)) {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        List<int> test2 = new List<int>{1, 3, 5, 7, 9};
        List<int> expected2 = new List<int>{2, 6, 10, 14, 18};
        List<int> result2 = Solution.DoubleElements(test2);
        if (!result2.SequenceEqual(expected2)) {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        List<int> test3 = new List<int>{0, -1, -2, -3};
        List<int> expected3 = new List<int>{0, -2, -4, -6};
        List<int> result3 = Solution.DoubleElements(test3);
        if (!result3.SequenceEqual(expected3)) {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        List<int> test4 = new List<int>{10, 20, 30};
        List<int> expected4 = new List<int>{20, 40, 60};
        List<int> result4 = Solution.DoubleElements(test4);
        if (!result4.SequenceEqual(expected4)) {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed.");
            return 0;
        } else {
            Console.WriteLine("Some test cases failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class Solution {
    public static List<int> DoubleElements(List<int> numbers) {
        List<int> doubledNumbers = new List<int>();
        foreach (int number in numbers) {
            doubledNumbers.Add(number * 2);
        }
        return doubledNumbers;
    }
    public static void CheckFunction() {
        Console.WriteLine("Test Case 1: ");
        List<int> test1 = new List<int>{2, 4, 6};
        List<int> expected1 = new List<int>{4, 8, 12};
        Console.WriteLine("Expected: [4, 8, 12], Got: [" + string.Join(", ", DoubleElements(test1)) + "]");
        Console.WriteLine("Test Case 2: ");
        List<int> test2 = new List<int>{1, 3, 5, 7, 9};
        List<int> expected2 = new List<int>{2, 6, 10, 14, 18};
        Console.WriteLine("Expected: [2, 6, 10, 14, 18], Got: [" + string.Join(", ", DoubleElements(test2)) + "]");
    }

}

你能编写一个C#方法，将给定整数列表中的每个元素翻倍吗？你的方法应该接受一个整数列表作为输入，并返回一个新列表，其中每个元素都被乘以2。例如，如果输入列表是[2, 4, 6]，输出应该是[4, 8, 12]。此外，请确保包括一个可以使用一些测试用例来验证你的方法正确性的函数。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class Solution
{
    public static List<int> DoubleElements(List<int> numbers) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class ElementDoublerTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        List<int> input1 = new List<int> { 1, 2, 3 };
        List<int> expected1 = new List<int> { 2, 4, 6 };
        List<int> result1 = ElementDoubler.DoubleElements(input1);
        if (!result1.SequenceEqual(expected1)) {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        List<int> input2 = new List<int> { 0, -1, -2 };
        List<int> expected2 = new List<int> { 0, -2, -4 };
        List<int> result2 = ElementDoubler.DoubleElements(input2);
        if (!result2.SequenceEqual(expected2)) {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        List<int> input3 = new List<int> { 10, 20, 30 };
        List<int> expected3 = new List<int> { 20, 40, 60 };
        List<int> result3 = ElementDoubler.DoubleElements(input3);
        if (!result3.SequenceEqual(expected3)) {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        List<int> input4 = new List<int> { };
        List<int> expected4 = new List<int> { };
        List<int> result4 = ElementDoubler.DoubleElements(input4);
        if (!result4.SequenceEqual(expected4)) {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        List<int> input5 = new List<int> { 5 };
        List<int> expected5 = new List<int> { 10 };
        List<int> result5 = ElementDoubler.DoubleElements(input5);
        if (!result5.SequenceEqual(expected5)) {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed.");
            return 0;
        } else {
            Console.WriteLine("Some test cases failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class ElementDoubler {
    public static List<int> DoubleElements(List<int> inputList) {
        List<int> doubledList = new List<int>();
        foreach (int item in inputList) {
            doubledList.Add(item * 2);
        }
        return doubledList;
    }
    public static void TestDoubleElements() {
        List<int> sampleList = new List<int>() { 2, 3, 4 };
        List<int> resultList = DoubleElements(sampleList);
        Console.WriteLine("Original list: [" + String.Join(", ", sampleList) + "]");
        Console.WriteLine("Doubled list: [" + String.Join(", ", resultList) + "]");
    }

}

你能写一个C#程序，接收一个整数列表并返回一个新列表，其中每个元素的值都是原来的两倍吗？例如，如果输入列表是 `[2, 3, 4]`，则输出应该是 `[4, 6, 8]`。解决方案应该封装在一个名为 `DoubleElements` 的方法中，该方法属于一个名为 `ElementDoubler` 的类。此方法应接受一个整数列表作为参数，并返回一个包含双倍值的新整数列表。同时，还要编写一个简单的方法，通过传递一个预定义的整数列表并将结果打印到控制台来测试 `DoubleElements` 的功能。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class ElementDoubler
{
    public static List<int> DoubleElements(List<int> inputList) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class TextAnalyzerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1: Empty list
        if (TextAnalyzer.FindLongestPhrase(new List<string>()) != null)
        {
            Console.WriteLine("Test 1 failed.");
            allTestsPassed = false;
        }

        // Test case 2: List with multiple phrases
        if (TextAnalyzer.FindLongestPhrase(new List<string>{"a", "bb", "ccc"}) != "ccc")
        {
            Console.WriteLine("Test 2 failed.");
            allTestsPassed = false;
        }

        // Test case 3: List with two phrases of the same length
        if (TextAnalyzer.FindLongestPhrase(new List<string>{"hello", "world"}) != "hello")
        {
            Console.WriteLine("Test 3 failed.");
            allTestsPassed = false;
        }

        // Test case 4: List with a longer phrase
        if (TextAnalyzer.FindLongestPhrase(new List<string>{"cat", "elephant", "dog"}) != "elephant")
        {
            Console.WriteLine("Test 4 failed.");
            allTestsPassed = false;
        }

        // Test case 5: List with multiple longer phrases
        if (TextAnalyzer.FindLongestPhrase(new List<string>{"short", "medium", "longest", "longer"}) != "longest")
        {
            Console.WriteLine("Test 5 failed.");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed successfully.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class TextAnalyzer
{
    public static string FindLongestPhrase(List<string> phrases)
    {
        if (phrases == null || phrases.Count == 0) return null;
        string longestPhrase = phrases[0];
        foreach (var phrase in phrases)
        {
            if (phrase.Length > longestPhrase.Length)
            {
                longestPhrase = phrase;
            }
        }
        return longestPhrase;
    }
    public static void TestFindLongestPhrase()
    {
        Debug.Assert(FindLongestPhrase(new List<string>()) == null);
        Debug.Assert(FindLongestPhrase(new List<string>{"a", "bb", "ccc"}) == "ccc");
        Debug.Assert(FindLongestPhrase(new List<string>{"hello", "world"}) == "hello");
        Debug.Assert(FindLongestPhrase(new List<string>{"cat", "elephant", "dog"}) == "elephant");
        Console.WriteLine("All tests passed successfully.");
    }
}
class Program
{

}

你被分配了一个任务，为一个文本分析应用程序创建一个实用函数。该函数需要筛选出一组短语中字符最多的短语。如果集合为空，函数应返回 `null` 以指示没有任何短语。此外，如果存在多个字符最多的短语，函数应返回集合中第一个出现的短语。你的挑战是高效地实现此功能。为了确保函数按预期运行，你还需要编写一个测试方法，以各种输入检查该函数。

你能设计并实现这个函数吗？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class TextAnalyzer
{
    public static string FindLongestPhrase(List<string> phrases)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class OddNumberFilterTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test case 1
        var list1 = new List<int> { 2, 3, 4, 5, 6 };
        var expected1 = new List<int> { 3, 5 };
        var result1 = OddNumberFilter.FilterOddNumbers(list1);
        Console.WriteLine($"Test 1 - Passed: {result1.SequenceEqual(expected1)}");
        allTestsPassed &= result1.SequenceEqual(expected1);

        // Test case 2
        var list2 = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
        var expected2 = new List<int> { 1, 3, 5, 7, 9 };
        var result2 = OddNumberFilter.FilterOddNumbers(list2);
        Console.WriteLine($"Test 2 - Passed: {result2.SequenceEqual(expected2)}");
        allTestsPassed &= result2.SequenceEqual(expected2);

        // Test case 3
        var list3 = new List<int> { -1, -2, -3, -4, -5 };
        var expected3 = new List<int> { -1, -3, -5 };
        var result3 = OddNumberFilter.FilterOddNumbers(list3);
        Console.WriteLine($"Test 3 - Passed: {result3.SequenceEqual(expected3)}");
        allTestsPassed &= result3.SequenceEqual(expected3);

        // Test case 4
        var list4 = new List<int> { 0, 1, 2, 3, 4, 5 };
        var expected4 = new List<int> { 1, 3, 5 };
        var result4 = OddNumberFilter.FilterOddNumbers(list4);
        Console.WriteLine($"Test 4 - Passed: {result4.SequenceEqual(expected4)}");
        allTestsPassed &= result4.SequenceEqual(expected4);

        return allTestsPassed ? 0 : -1;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class OddNumberFilter
{
    public static List<int> FilterOddNumbers(List<int> numbers)
    {
        return numbers.Where(number => number % 2 != 0).ToList();
    }
    public static void TestFilterOddNumbers()
    {
        var list1 = new List<int> { 2, 3, 4, 5, 6 };
        var expected1 = new List<int> { 3, 5 };
        var result1 = FilterOddNumbers(list1);
        Console.WriteLine($"Test 1 - Passed: {result1.SequenceEqual(expected1)}");
        var list2 = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
        var expected2 = new List<int> { 1, 3, 5, 7, 9 };
        var result2 = FilterOddNumbers(list2);
        Console.WriteLine($"Test 2 - Passed: {result2.SequenceEqual(expected2)}");
    }

}

你能写一个方法从给定的列表中过滤掉所有的偶数并只返回奇数吗？确保你的方法能处理一个整数列表并返回一个只包含奇数的新列表。例如，如果给定列表 `[2, 3, 4, 5, 6]`，它应该返回新列表 `[3, 5]`。此外，包含一个简单的测试函数，用几个预定义的列表验证你方法的正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class OddNumberFilter
{
    public static List<int> FilterOddNumbers(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;

#<INSERT>

class RectangleAreaCalculatorTest {
    public static int Main(string[] args) {
        bool allTestsPassed = true;

        // Test Case 1
        if (RectangleAreaCalculator.CalculateRectangleArea(5, 10) != 50) {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        if (RectangleAreaCalculator.CalculateRectangleArea(7, 3) != 21) {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        if (RectangleAreaCalculator.CalculateRectangleArea(9, 9) != 81) {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        if (RectangleAreaCalculator.CalculateRectangleArea(0, 10) != 0) {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        if (RectangleAreaCalculator.CalculateRectangleArea(10, 0) != 0) {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed) {
            Console.WriteLine("All test cases passed successfully.");
            return 0;
        } else {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using System;
class RectangleAreaCalculator {
    public static int CalculateRectangleArea(int length, int width) {
        return length * width;
    }
    public static void TestCalculateRectangleArea() {
        Debug.Assert(CalculateRectangleArea(5, 10) == 50, "Test Case 1 Failed");
        Debug.Assert(CalculateRectangleArea(7, 3) == 21, "Test Case 2 Failed");
        Debug.Assert(CalculateRectangleArea(9, 9) == 81, "Test Case 3 Failed");
        Console.WriteLine("All test cases passed successfully.");
    }

}

你能写一个C#方法来计算矩形的面积吗？该方法应该接受两个参数：矩形的长度和宽度，都是整数。它应该返回一个整数形式的面积。为了确保方法按预期工作，请还包括一个简单的测试函数，用一些测试案例来验证计算。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class RectangleAreaCalculator
{
    public static int CalculateRectangleArea(int length, int width) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class LetterFrequencyFinderTest
{
    public static void Main(string[] args)
    {
        var testCases = new Dictionary<string, Dictionary<string, long>>()
        {
            { "m n o m", new Dictionary<string, long>{{"m", 2L}} },
            { "x y z x y", new Dictionary<string, long>{{"x", 2L}, {"y", 2L}} },
            { "a b c d e f g", new Dictionary<string, long>{{"a", 1L}, {"b", 1L}, {"c", 1L}, {"d", 1L}, {"e", 1L}, {"f", 1L}, {"g", 1L}} },
            { "", new Dictionary<string, long>() },
            { "a a a b b c", new Dictionary<string, long>{{"a", 3L}} }
        };

        int result = 0;
        foreach (var testCase in testCases)
        {
            var resultDict = LetterFrequencyFinder.FindHighestFrequencyLetters(testCase.Key);
            if (resultDict.SequenceEqual(testCase.Value))
            {
                Console.WriteLine($"Test passed for input: '{testCase.Key}'");
            }
            else
            {
                Console.WriteLine($"Test failed for input: '{testCase.Key}'");
                result = -1;
            }
        }

        Environment.Exit(result);
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class LetterFrequencyFinder
{
    public static Dictionary<string, long> FindHighestFrequencyLetters(string input)
    {
        if (string.IsNullOrWhiteSpace(input)) return new Dictionary<string, long>();
        var letterCounts = input.Replace(" ", "")
                                .GroupBy(letter => letter)
                                .ToDictionary(group => group.Key.ToString(), group => (long)group.Count());
        long maxFrequency = letterCounts.Values.Max();
        return letterCounts.Where(pair => pair.Value == maxFrequency)
                           .ToDictionary(pair => pair.Key, pair => pair.Value);
    }
    public static void CheckMethod()
    {
        var testCases = new Dictionary<string, Dictionary<string, long>>()
        {
            { "m n o m", new Dictionary<string, long>{{"m", 2L}} },
            { "x y z x y", new Dictionary<string, long>{{"x", 2L}, {"y", 2L}} },
            { "", new Dictionary<string, long>() }
        };
        foreach (var testCase in testCases)
        {
            var result = FindHighestFrequencyLetters(testCase.Key);
            if (result.SequenceEqual(testCase.Value))
            {
                Console.WriteLine($"Test passed for input: '{testCase.Key}'");
            }
            else
            {
                Console.WriteLine($"Test failed for input: '{testCase.Key}'");
            }
        }
    }

}

你能写一个 C# 方法，该方法接收一个由空格分隔的小写字母字符串，并返回一个字典吗？这个字典应该包含每个唯一字母作为键和它们出现次数作为值。然而，有一个小转折：只包含输入字符串中出现最多的字母。所以，如果多个字母的出现频率最高，则将它们全部包含在输出中。如果输入中没有字母，方法应该返回一个空字典。以下是几个例子来说明我的意思：

- 如果输入是 `"m n o m"`，输出应该是 `new Dictionary<string, long>(){{"m", 2L}}`。
- 对于 `"x y z x y"`，它应该返回 `new Dictionary<string, long>(){{"x", 2L}, {"y", 2L}}`。
- 如果输入是一个空字符串 `""`，则返回一个空字典：`new Dictionary<string, long>()`。

你能否也包括一个简单的方法来验证该方法在这些例子中是否正常工作？

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class LetterFrequencyFinder
{
    public static Dictionary<string, long> FindHighestFrequencyLetters(string input)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class NumberSorterTest {
    public static void Main(string[] args) {
        int result = 0;

        if (NumberSorter.SortWordedNumbers("three one five") != "one three five") {
            Console.WriteLine("Test 1 Failed");
            result = -1;
        }

        if (NumberSorter.SortWordedNumbers("nine eight seven") != "seven eight nine") {
            Console.WriteLine("Test 2 Failed");
            result = -1;
        }

        if (NumberSorter.SortWordedNumbers("two four six") != "two four six") {
            Console.WriteLine("Test 3 Failed");
            result = -1;
        }

        if (NumberSorter.SortWordedNumbers("ten nine eight") != "eight nine ten") {
            Console.WriteLine("Test 4 Failed");
            result = -1;
        }

        if (NumberSorter.SortWordedNumbers("one two three") != "one two three") {
            Console.WriteLine("Test 5 Failed");
            result = -1;
        }

        if (result == 0) {
            Console.WriteLine("All tests passed!");
        }

        Environment.Exit(result);
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class NumberSorter {
    public static string SortWordedNumbers(string numberWords) {
        Dictionary<string, int> numberMapping = new Dictionary<string, int> {
            {"one", 1}, {"two", 2}, {"three", 3}, {"four", 4},
            {"five", 5}, {"six", 6}, {"seven", 7}, {"eight", 8},
            {"nine", 9}, {"ten", 10}
        };
        var sortedNumbers = numberWords.Split(' ')
                                        .Select(word => numberMapping[word])
                                        .OrderBy(num => num)
                                        .Select(num => numberMapping.FirstOrDefault(x => x.Value == num).Key);
        return String.Join(" ", sortedNumbers);
    }
    public static void Check() {
        Debug.Assert(SortWordedNumbers("three one five") == "one three five");
        Debug.Assert(SortWordedNumbers("nine eight seven") == "seven eight nine");
        Debug.Assert(SortWordedNumbers("two four six") == "two four six");
        Console.WriteLine("All checks passed!");
    }

}

Hey, 能帮我一下吗? 我有一个数字列表，但它们全都以文字形式从一到十写出来，我需要按升序排列它们。然而，它们都混在一个字符串中，单词间以空格分隔。例如，如果我有字符串 "six four two"，我想要它返回 "two four six"。你能为我编写一个C#程序来实现这一点吗？它需要处理这些文字数字的任意组合，并按正确的顺序返回排序后的字符串。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class NumberSorter
{
    public static string SortWordedNumbers(string numberWords) {
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;

#<INSERT>

class UniqueDigitCounterTest
{
    // Tests the CountUniqueDigits method with provided data points.
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        if (UniqueDigitCounter.CountUniqueDigits("Hello123") != 3)
        {
            Console.WriteLine("Test 1 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 1 Passed");
        }

        // Test Case 2
        if (UniqueDigitCounter.CountUniqueDigits("NoDigitsHere!") != 0)
        {
            Console.WriteLine("Test 2 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 2 Passed");
        }

        // Test Case 3
        if (UniqueDigitCounter.CountUniqueDigits("123321") != 3)
        {
            Console.WriteLine("Test 3 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 3 Passed");
        }

        // Test Case 4
        if (UniqueDigitCounter.CountUniqueDigits("A1B2C3D4E5F6G7H8I9J0") != 10)
        {
            Console.WriteLine("Test 4 Failed");
            allTestsPassed = false;
        }
        else
        {
            Console.WriteLine("Test 4 Passed");
        }

        if (allTestsPassed)
        {
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
class UniqueDigitCounter
{
    public static int CountUniqueDigits(string str)
    {
        HashSet<char> uniqueDigits = new HashSet<char>();
        foreach (char ch in str)
        {
            if (char.IsDigit(ch))
            {
                uniqueDigits.Add(ch);
            }
        }
        return uniqueDigits.Count;
    }
    public static void TestCountUniqueDigits()
    {
        Console.WriteLine(CountUniqueDigits("Hello123") == 3 ? "Test 1 Passed" : "Test 1 Failed");
        Console.WriteLine(CountUniqueDigits("NoDigitsHere!") == 0 ? "Test 2 Passed" : "Test 2 Failed");
        Console.WriteLine(CountUniqueDigits("123321") == 3 ? "Test 3 Passed" : "Test 3 Failed");
        Console.WriteLine(CountUniqueDigits("A1B2C3D4E5F6G7H8I9J0") == 10 ? "Test 4 Passed" : "Test 4 Failed");
    }

}

你能写一个C#程序来计算给定字母数字字符串中的唯一数字的数量吗？例如，如果输入字符串是“Hello123”，程序应计算不同的数字，即“1”、“2”和“3”，结果输出为3。程序应忽略字母和特殊字符，只关注数字。确保你的解决方案包含一个执行此计算的方法和一个用给定示例测试其正确性的方法。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class UniqueDigitCounter
{
    public static int CountUniqueDigits(string str)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class EvenNumbersExtractorTest
{
    public static int Main(string[] args)
    {
        var testCases = new Dictionary<List<int>, List<int>>
        {
            { new List<int>{ 1, 2, 3, 4, 5 }, new List<int>{ 2, 4 } },
            { new List<int>{ 10, 23, 36, 47, 58 }, new List<int>{ 10, 36, 58 } },
            { new List<int>{ -2, -1, 0, 1, 2 }, new List<int>{ -2, 0, 2 } },
            { new List<int>{ 1, 3, 5, 7, 9 }, new List<int>{ } },
            { new List<int>{ 2, 4, 6, 8, 10 }, new List<int>{ 2, 4, 6, 8, 10 } }
        };

        foreach (var testCase in testCases)
        {
            var input = testCase.Key;
            var expectedOutput = testCase.Value;
            var actualOutput = EvenNumbersExtractor.ExtractEvenNumbers(input);

            if (!expectedOutput.SequenceEqual(actualOutput))
            {
                Console.WriteLine($"Test Failed for Input: {string.Join(", ", input)}");
                Console.WriteLine($"Expected Output: {string.Join(", ", expectedOutput)}");
                Console.WriteLine($"Actual Output: {string.Join(", ", actualOutput)}");
                return -1;
            }
        }

        Console.WriteLine("All tests passed.");
        return 0;
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class EvenNumbersExtractor
{
    public static List<int> ExtractEvenNumbers(List<int> numbers)
    {
        return numbers.Where(number => number % 2 == 0).ToList();
    }
    public static void TestExtractEvenNumbers()
    {
        var testCases = new Dictionary<List<int>, List<int>>
        {
            { new List<int>{ 1, 2, 3, 4, 5 }, new List<int>{ 2, 4 } },
            { new List<int>{ 10, 23, 36, 47, 58 }, new List<int>{ 10, 36, 58 } },
            { new List<int>{ -2, -1, 0, 1, 2 }, new List<int>{ -2, 0, 2 } }
        };
        foreach (var testCase in testCases)
        {
            var input = testCase.Key;
            var expectedOutput = testCase.Value;
            var actualOutput = ExtractEvenNumbers(input);
            Console.WriteLine($"Input: {string.Join(", ", input)}");
            Console.WriteLine($"Expected Output: {string.Join(", ", expectedOutput)}");
            Console.WriteLine($"Actual Output: {string.Join(", ", actualOutput)}");
            Console.WriteLine($"Test Passed: {expectedOutput.SequenceEqual(actualOutput)}\n");
        }
    }

}

你好，我正在为一个项目编写一个 C# 程序，需要从给定的整数列表中提取并列出所有偶数。不幸的是，我有点卡住了，需要你的帮助来完成它。你能写一个 C# 方法，该方法接受一个整数列表作为输入并返回一个只包含偶数的新列表吗？例如，如果我传入一个包含数字 1、2、3、4 和 5 的列表，我应该得到一个只包含 2 和 4 的列表。如果你能包括一个简单的方法来用几个不同的列表测试该方法以确保其正常工作，那就太好了。谢谢！

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class EvenNumbersExtractor
{
    public static List<int> ExtractEvenNumbers(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class SquaredOddsSorterTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        var list1 = new List<int> { 1, 2, 3, 4, 5 };
        var expected1 = new List<int> { 25, 9, 1 };
        if (!SquaredOddsSorter.FilterSquareSortDesc(list1).SequenceEqual(expected1))
        {
            Console.WriteLine("Test Case 1 Failed");
            allTestsPassed = false;
        }

        // Test Case 2
        var list2 = new List<int> { -3, -2, -1, 0, 4, 6 };
        var expected2 = new List<int> { 9, 1 };
        if (!SquaredOddsSorter.FilterSquareSortDesc(list2).SequenceEqual(expected2))
        {
            Console.WriteLine("Test Case 2 Failed");
            allTestsPassed = false;
        }

        // Test Case 3
        var list3 = new List<int> { -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 };
        var expected3 = new List<int> { 25, 25, 9, 9, 1, 1 };
        if (!SquaredOddsSorter.FilterSquareSortDesc(list3).SequenceEqual(expected3))
        {
            Console.WriteLine("Test Case 3 Failed");
            allTestsPassed = false;
        }

        // Test Case 4
        var list4 = new List<int> { 2, 4, 6, 8 };
        var expected4 = new List<int> { };
        if (!SquaredOddsSorter.FilterSquareSortDesc(list4).SequenceEqual(expected4))
        {
            Console.WriteLine("Test Case 4 Failed");
            allTestsPassed = false;
        }

        // Test Case 5
        var list5 = new List<int> { 1, 3, 5, 7, 9 };
        var expected5 = new List<int> { 81, 49, 25, 9, 1 };
        if (!SquaredOddsSorter.FilterSquareSortDesc(list5).SequenceEqual(expected5))
        {
            Console.WriteLine("Test Case 5 Failed");
            allTestsPassed = false;
        }

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class SquaredOddsSorter
{
    public static List<int> FilterSquareSortDesc(List<int> numbers)
    {
        return numbers.Where(num => num % 2 != 0)
                      .Select(num => num * num)
                      .OrderByDescending(num => num)
                      .ToList();
    }
    public static void Check()
    {
        var list1 = new List<int> { 1, 2, 3, 4, 5 };
        var expected1 = new List<int> { 25, 9, 1 };
        Debug.Assert(FilterSquareSortDesc(list1).SequenceEqual(expected1));
        var list2 = new List<int> { -3, -2, -1, 0, 4, 6 };
        var expected2 = new List<int> { 9, 1 };
        Debug.Assert(FilterSquareSortDesc(list2).SequenceEqual(expected2));
        Console.WriteLine("All tests passed.");
    }

}

你能写一个方法，该方法接收一个整数集合，过滤掉偶数，对剩下的奇数进行平方，然后返回这些平方后的数按降序排序的列表吗？确保你的解决方案是一个包含所有必要导入的独立C#程序。该程序应该处理一个整数列表，其中可能包括正数和负数。重复的数字应该像列表中的其他数字一样进行平方和排序。例如，如果输入列表是 `[1, 2, 3, 4, 5]`，那么输出应该是 `[25, 9, 1]`，因为 1、3 和 5 是奇数，平方后并按降序排序。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class SquaredOddsSorter
{
    public static List<int> FilterSquareSortDesc(List<int> numbers)
    {
        // Implement your code here.
    }
}
```


using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;

#<INSERT>

class StringMergerTest
{
    public static int Main(string[] args)
    {
        bool allTestsPassed = true;

        // Test Case 1
        allTestsPassed &= StringMerger.MergeToUpper(new List<string> { "h", "e", "l", "l", "o" }) == "HELLO";
        // Test Case 2
        allTestsPassed &= StringMerger.MergeToUpper(new List<string> { "w", "o", "r", "l", "d" }) == "WORLD";
        // Test Case 3
        allTestsPassed &= StringMerger.MergeToUpper(new List<string> { "a", "b", "c" }) == "ABC";
        // Test Case 4
        allTestsPassed &= StringMerger.MergeToUpper(new List<string> { "1", "2", "3" }) == "123";

        if (allTestsPassed)
        {
            Console.WriteLine("All tests passed.");
            return 0;
        }
        else
        {
            Console.WriteLine("Some tests failed.");
            return -1;
        }
    }
}

using System.Security.Cryptography;
using System.Text;
using System.Diagnostics;
using System.Numerics;
using System;
using System.Collections.Generic;
using System.Linq;
class StringMerger
{
    public static string MergeToUpper(List<string> characters)
    {
        return string.Concat(characters.Select(c => c.ToUpper()));
    }
    public static void TestMergeToUpper()
    {
        Console.WriteLine(MergeToUpper(new List<string> { "h", "e", "l", "l", "o" }) == "HELLO" ? "Test 1 Passed" : "Test 1 Failed");
        Console.WriteLine(MergeToUpper(new List<string> { "w", "o", "r", "l", "d" }) == "WORLD" ? "Test 2 Passed" : "Test 2 Failed");
    }
}
class Program
{

}

假设你正在一个涉及处理字符串列表的新文本处理应用程序项目中工作。你当前的任务是开发一个函数，将单个字符的列表合并成一个单词。然而，有一个转折点：你需要确保每个字符在连接之前都被转换为大写。例如，如果输入列表包含字符 ['h', 'e', 'l', 'l', 'o']，输出应该是'HELLO'。

你能写一个C#函数，该函数接受一个单字符字符串的列表作为输入，并返回一个字符串，其中每个字符都被转换为大写且之间没有空格连接吗？此外，请确保包括一个简单的方法来测试你的函数，使用几个示例来证明其正确性。

请用C#实现不包含Main函数的完整代码，并遵循如下类型定义：
```csharp
using xxx
...
class StringMerger
{
    public static string MergeToUpper(List<string> characters)
    {
        // Implement your code here.
    }
}
```